scholarly journals Fabrication and Characterization of Supersaturated Al-Mg Alloys by Severe Plastic Deformation and Their Mechanical Properties

2009 ◽  
Vol 50 (1) ◽  
pp. 76-81 ◽  
Author(s):  
Kenji Kaneko ◽  
Tetsuro Hata ◽  
Tomoharu Tokunaga ◽  
Zenji Horita
2013 ◽  
Vol 48 (13) ◽  
pp. 4681-4688 ◽  
Author(s):  
Manping P. Liu ◽  
Hans J. Roven ◽  
Maxim Yu. Murashkin ◽  
Ruslan Z. Valiev ◽  
Ascar Kilmametov ◽  
...  

2008 ◽  
Author(s):  
Manping P. Liu ◽  
Hans Roven ◽  
Maxim Murashkin ◽  
Ruslan Z. Valiev ◽  
Ascar Kilmametov ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Jinbao Lin ◽  
Weijie Ren ◽  
Qudong Wang ◽  
Lifeng Ma ◽  
Yongjun Chen

Severe plastic deformation (SPD) has been widely employed to refine the grain size of Mg alloys, with the main objective to improve the strength and ductility of Mg alloys, since the well-known Hall-Petch equation suggests that a decreased grain size leads to an increased yield strength. However, the yield strength of Mg alloys processed by SPD is often decreased even though the grain size is effectively reduced. The abnormal flow behavior in Mg alloys processed by SPD has attracted great attention although this mechanism is still unclear, due to its complex and extensive influence factors. In this paper, the relationships between the processing conditions, grain refinement, and mechanical properties of the SPD treated Mg alloys are reviewed, with the emphasis on the effects of grain size and texture on the yield strength.


2014 ◽  
Vol 76 ◽  
pp. 54-67 ◽  
Author(s):  
Shiteng Zhao ◽  
Chenlu Meng ◽  
Fengxin Mao ◽  
Weiping Hu ◽  
Günter Gottstein

2006 ◽  
Vol 54 (15) ◽  
pp. 3933-3939 ◽  
Author(s):  
A MAZILKIN ◽  
B STRAUMAL ◽  
E RABKIN ◽  
B BARETZKY ◽  
S ENDERS ◽  
...  

2006 ◽  
Vol 503-504 ◽  
pp. 91-98 ◽  
Author(s):  
Yuri Estrin

In this talk, a range of effects produced by severe plastic deformation will be considered. In addition to the mechanical property improvements, such as enhanced strength and more favourable conditions for superplasticity, SPD will be shown to produce a much broader spectrum of beneficial effects. Case studies demonstrating accelerated kinetics of nitriding of steels and hydrogenation of Mg alloys will be presented. Further possible applications of SPD techniques will be discussed.


2018 ◽  
Vol 1 (1) ◽  
pp. 77-90
Author(s):  
Walaa Abdelaziem ◽  
Atef Hamada ◽  
Mohsen A. Hassan

Severe plastic deformation is an effective method for improving the mechanical properties of metallic alloys through promoting the grain structure. In the present work, simple cyclic extrusion compression technique (SCEC) has been developed for producing a fine structure of cast Al-1 wt. % Cu alloy and consequently enhancing the mechanical properties of the studied alloy. It was found that the grain structure was significantly reduced from 1500 µm to 100 µm after two passes of cyclic extrusion. The ultimate tensile strength and elongation to failure of the as-cast alloy were 110 MPa and 12 %, respectively. However, the corresponding mechanical properties of the two pass CEC deformed alloy are 275 MPa and 35%, respectively. These findings ensure that a significant improvement in the grain structure has been achieved. Also, cyclic extrusion deformation increased the surface hardness of the alloy by 49 % after two passes. FE-simulation model was adopted to simulate the deformation behavior of the material during the cyclic extrusion process using DEFORMTM-3D Ver11.0. The FE-results revealed that SCEC technique was able to impose severe plastic strains with the number of passes. The model was able to predict the damage, punch load, back pressure, and deformation behavior.


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